Valve-grinder.



c. 0, FRANK. VALVE GRINDER.

APPLICATION FILED JUNE20,1913.

Patented Now/ 18,1913.

a To all whom it may concern:

outrun s'ra'rns PA'irn 'r OFFICE.

CONRAD C. FRANK, 0F DENISON, IOWA.

VALVE-GRINDER.

Be it known that I, Conn-n) C. FRANK, a itizen of the United States, residing at Denison, in the county of Crawford and State of Iowa, have invented certain new and useful Improvementsin Valve-Grinders, of'which the following is a specification, reference being had to the accompanying drawings.

This invention relates to new and useful improvements in grinding devices and more particularly to a valve grinding device and the primary object of the invention is to provide a' device of this character. which will grind or reface the valves of a combustlon engine. by-a vertical reciprocatory movement. a

A further object of the invention resides in providing'a device which, in its reciprocatory operation, is also given arotarymove ment to change the position of the valve, while the same is being treated and a still further object resides in providing a device 'in which the rotary movement is entirely independent and free from the operation of the grinding mechanism.

A still further object of the invention resides in providing a device which is simple and durable in construction, inexpensive to manufacture and one which will be very efficient and useful in operation.

. \Vith these and other objects in view, the invention consists in the novel features of construction, combination and arrangement of parts as will be hereinafter referred to and more particularly pointed out in the specification and claims. j i

In the accompanying drawing forming a part of this application, Figure 1 is a side elevation of the device partly in section, showing the device set up. for use. Fig. 2

is a vertical section therethrough. Fig. 3 is a plan view of the toothed wheel used for f and Fig. 4: is a horizontal section as seen carrying out the rotary operation thereof;

,on line 44, Fig, 2. ifIn describing my 1nvent1on, I shall refer at the drawing in which similar reference ract-ers designate corresponding parts.

throughout the several views and in which 1 -"indicates an elongated plate-like mem-' :which is designed to form an arm, the game being formed integral at its lower end with a. casing Specification of Letters Patent. Application filed June 20. 1913.

or housing 2, thelattei' rest: ling on a; cylinder 3.: The upper ;end of. the

Patented Nov. 18, 1913. Serial No. 774,909.

arm 1 has a handle 1 formed thereon and the cylinder 3 is provided with a valve seat 5 to receive therein a valve 6 to be ground or refaced by this device. A projection 7 formed on or otherwise secured to the cylinder 3, is arranged in spaced relation be low the portion of the cylinder having the valve seat 5 therein and an opening 8 formed in said projection 7 below the valve seat receives the stem 9 of the valve loosely therethrough. Encircling the valve stem between the projection 7 and the valve head, isa coil spring 10, the tendency of which is to normally force said valve upwardly above the seat 5, as shown in dotted lines in Figs. 1 and 2 of the drawing.

The primary object of my invention is to provide a means for grinding or refacing the valve through the medium of a reciprocatorymovement given said valve and, to this end, I have provided a shaft 11 which is slidably disposed through an opening in the top of the housing or casing 2 to one side of the arm 1. The lower end of this shaft 11 is enlarged, as shown at 12, and has a stud'or rejection 13 formed on the bottom face t ereof, which is received in the usual opening in the top of the valve 6. Encircling the shaft 11 between the enlarged portion 12 thereon and the under face of the housing or casing 2, is a coil spring'14 which is of greater strength than the spring 10 and has the normal tendency of forcing downwardly upon the lower end of the shaft 11, to obviously seat the valve. This spring 14., being of greater strength than the spring 10, normally retains the valve in its seated position and I have provided a means for nil-seating the same. To this end, a bracket or casing 1 is provided and se cured to one face of the arm 1, the same slidably receiving thercthrough the upper end of the shaft 11. Extending through said arm 1 to rotate therein and mounted to rotate in one wall of the bracket 15, is a horizontal shaft ii; and carried on this shaft to one side of the arm 1, is a ratchet wheel 17. An additional arm 18 is provided to rest flatly against the side of the arm 1 and is guided through a guide keeper 19 secured to said arm 1, the lower end of said arm 18 being slidably disposed through the opening in the top of the casing 2. The extreme lower end of said arm 18 is bent and bifurcated, as shown at 20, said bifur- 'teted', and means-for imparting motion to mounted on the upper end of the first mentioned vertical shaft and disposed within said housing, a lug carried on the tran verse' shaft adapted for engagement with the teeth on said wheel to rotate said vcrt tical shaft. as the transverse shaft is rolsimultaneously raise and lower the first mentioned shaft.

In testimony whereof I.hereunto uflix my signature in the presence of two witnesses.

Y CONRAD C. FRANK,

W itnesses JOHN RUBTEBHOLZ,

the transverse shaft, whsl eby to rotate and E. K. BUROHL 

